Included - Village of Huntley

MEMORANDUM
ESTIMATED COST ANALYSIS
A. CBBEL evaluated the cost implications as a result of the use of LED vs. HPS luminaires in
terms of initial construction costs and potential future energy and maintenance cost savings.
For the purposes of our evaluation, CBBEL has estimated a lifespan for the LED luminaires
to be 18 years and 13 years for HPS.
I. Initial Estimated Construction Cost Utilizing “LED Type” Luminaires in Lieu of Village
Standard HPS Type Luminaires
Additional pole installation cost: 4 poles x $8,000/pole = $32,000
Additional luminaire cost to change from HPS to LED: 25 luminaires x
$100/luminaire = $ 2,500
Reduction in cost due to reduced wire size from 3/C #6 to 3/C #8 = ($10,000)
Installation of ComEd meters on the electric service for each lighting
controller: 2 controllers x $1,500 = $ 3,000
Total net estimated additional initial construction cost for LED = $27,500
II. Estimated Potential Energy & Maintenance Cost Savings using LED versus HPS
Luminaires
Annual operating cost reduction based on the $0.03/Kwh charge for
electricity the Village pays to ComEd would equal approximately $12
per luminaire. For 25 poles on the new system this would equal $300
per year.
18 year operating cost savings: $300 x 18 years = $5,400
18 year maintenance cost savings from reduced outages: 25 poles x
1.5 average outages for HPS x $100/HPS outage cost (assumed) for
labor and materials = $3,750
18 year energy & maintenance cost savings: $5,400 + $3,750 = $9,150
18 year net overall added cost to change to LED fixtures = $27,500
($9,150)
Total net addition = $18,350
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CHRISTOPHER B. BURKE ENGINEERING, LTD.
9575 W Higgins Road, Suite 600 Rosemont, Illinois 60018-4920 Tel (847) 823-0500 Fax (847) 823-0520